BACKGROUND Ovarian tissue cryopreservation is a technique for fertility preservation addressed to prepubertal girls or to patients for whom no ovarian stimulation is possible before initiation of gonadotoxic treatments. Autotransplantation of frozen-thawed ovarian tissue is the only available option for reuse but presents some limitations: ischemic tissue damages post-transplant and reintroduct...

background ovarian cancer is the most common fatal gynecologic malignancy in women. the brca2 gene has a role in regulation of cell cycle during proliferation, differentiation and dna repair. changes in the methylation of brca2 may be an effective mechanism for ovarian cancer. objectives the aim of the present study was to evaluate the association between ovarian cancer and methylation status o...

Background: The aim of this study was to evaluate the efficacy of a vitrification protocol developed by our group to cryopreserve ovarian tissue. For this, we used ovaries from non-human primates in order to have an animal model close to the clinical setting. Materials and Methods: Ovarian biopsies from five adult baboons were vitrified, warmed and autografted. After five months, follicle survi...

The objective of this study was to explore the feasibility and methods of screening the residual normal ovarian tissue adjacent to orthotopic ovarian carcinomas in nude mice. Human epithelial ovarian cancer cells (OVCAR3) were subcutaneously implanted for a tumor source and ovarian orthotopic transplantation. The cancer tissue, proximal paraneoplastic tissue, middle paraneoplastic tissue, remot...

struma ovarii is an uncommon highly specialized ovarian teratoma that accounts for less than 5% of mature teratomas. it is composed predominantly of mature thyroid tissue. thyroid tissue is observed in 5%-15% of teratomas; however, to qualify as a struma ovarii tumor, the thyroid proportion must comprise more than 50% of the overall tissue. the combination of pseudo meigs'syndrome and elevation...

objective: to evaluate the potentiality of ovcar–3 cell line of ovarian adenocarcinoma as a xenograft model for ovarian adenocarcinoma in nude mice. materials and methods: the cell line isolated from advanced human ovarian adenocarcinoma, were inoculated to eight nude mice and two months later. established tumors were transferred to pathology laboratory to be prepared by h&e; staining and immun...

Ovarian tissue cryopreservation is the key step towards the establishment of an ovarian tissue bank or the preservation of ovarian tissue for patients scheduled for gonadotoxic cancer therapies, aiming for fertility restoration later on. Conventional cryopreservation, or slow freezing, has been the mainstay of ovarian tissue cryopreservation. Vitrification has recently emerged as a new trend fo...

background and objectives: presence of steroid hormone receptors (estrogen and progesterone) in the tumor tissues of various organs correlates with response to therapy and prognosis. since their role in ovarian cancer is still controversial, in this study we investigated the expression and prognostic value of the estrogen receptor (er) and progesterone receptors (pr) in ovarian papillary serous...

to study the effect of dietary animal and plant lipids on gonadal differents and sex steroid hormones levels of blood in rainbow trout (oncorhynchus mykiss), the four diets was formulated based on 15% fat. the control uses 100% oil, fish oil was treated in the first, second and third respectively 25% and 75% fish oil, soybean oil, canola and cotton were used. after six weeks of feeding fish wit...